extends Node
const GAME := preload("res://scenes/game/game.tscn")

func _modifier(key: String, value: float) -> ItemStatModifier:
	var modifier := ItemStatModifier.new()
	modifier.stat_key = key
	modifier.value = value
	return modifier

func _item(value: float) -> ItemInstance:
	var item := ItemInstance.new()
	item.definition = preload("res://resources/items/reinforced_shield.tres")
	item.primary_value_override = value
	return item

func _ready() -> void:
	GameState.start_new_run()
	var game := GAME.instantiate()
	add_child(game)
	game.set_physics_process(false)
	var ship := game.get_node("PlayerShip")
	ship.set_physics_process(false)
	ship.get_node("WeaponController").set_physics_process(false)
	for enemy in get_tree().get_nodes_in_group("enemies"):
		enemy.set_physics_process(false)
	var inventory: ShipInventory = ship.get_node("ShipInventory")
	var old := _item(2.0)
	old.additional_modifiers.append(_modifier("damage_percent", 10.0))
	old.additional_modifiers.append(_modifier("shield_regeneration", 1.0))
	var candidate := _item(3.0)
	candidate.additional_modifiers.append(_modifier("damage_percent", 2.0))
	candidate.additional_modifiers.append(_modifier("damage_percent", 3.0))
	candidate.additional_modifiers.append(_modifier("energy_regeneration", 4.0))
	assert(inventory.add_item(old))
	assert(inventory.move_item("cargo", inventory.cargo.find(old), "module", 0))
	assert(inventory.add_item(candidate))
	var hull_before: float = ship.get("max_hull")
	var shields_before: float = ship.get("max_shields")
	var rows := inventory.get_item_comparison(candidate, old)
	var deltas := {}
	for row in rows:
		deltas[row["key"]] = row["delta"]
	assert(is_equal_approx(deltas["max_shields"], 1.0))
	var weapon: ItemInstance = inventory.weapon_slots[0]
	assert(is_equal_approx(deltas["weapon_damage_0"], weapon.get_stat_total("damage") * -0.05))
	assert(is_equal_approx(deltas["shield_regeneration"], -1.0))
	assert(is_equal_approx(deltas["energy_regeneration"], 2.0))
	assert(inventory.get_item_comparison(old, old).is_empty())
	assert(inventory.get_item_comparison(candidate, null)[0]["delta"] == 3.0)
	assert(ship.get("max_hull") == hull_before and ship.get("max_shields") == shields_before)
	assert(inventory.module_slots[0] == old and inventory.cargo.has(candidate))
	# Percentage bonuses combine with flat stats and the rest of the equipment.
	old.additional_modifiers.append(_modifier("shield_percent", 10.0))
	candidate.additional_modifiers.append(_modifier("shield_percent", 5.0))
	var armor := ItemInstance.new()
	armor.definition = preload("res://resources/items/hull_plating.tres")
	armor.additional_modifiers.append(_modifier("shield_percent", 20.0))
	assert(inventory.add_item(armor))
	assert(inventory.move_item("cargo", inventory.cargo.find(armor), "module", 1))
	var expected: float = (float(ship.get("base_max_shields")) + 3.0) * 1.25 - (float(ship.get("base_max_shields")) + 2.0) * 1.3
	var predicted := 0.0
	for row in inventory.get_item_comparison(candidate, old):
		if row["key"] == "max_shields":
			predicted = row["delta"]
	assert(is_equal_approx(predicted, expected))
	var current_shields: float = ship.get("max_shields")
	assert(inventory.move_item("cargo", inventory.cargo.find(candidate), "module", 0))
	assert(is_equal_approx(float(ship.get("max_shields")) - current_shields, predicted))
	assert(inventory.move_item("cargo", inventory.cargo.find(old), "module", 0))
	assert(inventory.move_item("module", 1, "cargo", inventory.cargo.find(null)))
	old.additional_modifiers.pop_back()
	candidate.additional_modifiers.pop_back()
	inventory._recalculate_ship_stats()
	var hud := game.get_node("HUD/HUDRoot")
	var slot := preload("res://scenes/ui/inventory_slot_view.tscn").instantiate()
	slot.slot_index = inventory.cargo.find(candidate)
	hud.add_child(slot)
	slot.hide()
	var tooltip: PanelContainer = slot._make_custom_tooltip(candidate.get_tooltip_text())
	hud.add_child(tooltip)
	tooltip.position = Vector2(240, 80)
	var columns := tooltip.get_child(0)
	assert(columns.get_child_count() == 3)
	var comparison: RichTextLabel = columns.get_child(2)
	assert(comparison.get_parsed_text().contains("Tarcze: +1.00 pkt"))
	assert(comparison.get_parsed_text().contains("Śr. obrażenia [LPM]:"))
	assert(not comparison.get_parsed_text().contains("→"))
	assert(not comparison.get_parsed_text().contains("%"))
	assert(not comparison.get_parsed_text().contains("p.p."))
	assert(comparison.get_parsed_text().contains("Regeneracja tarcz: -1.00 pkt/s"))
	var debug: Label = hud.get_node("DebugScroll/DebugInfo")
	assert(debug.get_theme_font("font").get_height(10) + debug.get_theme_constant("line_spacing") <= 13.0)
	await get_tree().process_frame
	await get_tree().process_frame
	assert(tooltip.size.x < 1280 and tooltip.size.y < 620)
	assert(debug.get_line_count() <= 26)
	assert(debug.get_combined_minimum_size().y < 400)
	print("EQUIPMENT_COMPARISON_TEST: PASS primary difference, addon loss, duplicate addon sum, regeneration scaling, empty slot, unchanged stats, side column, compact debug, actual percentage effects match equipping")